Improvement in machines for trimming horseshoe-nails



Patented. May 30,1876.

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4 og m, /4W 6W7Z 1 6 j, Q P r r61 841m UNITED STATES PATENT .CFFIGE- V ALEXANDER H. OARYL, OF FORGE VILLAGE, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR TRIMMING HORSESHOE-NAILS.

Specification forming part of Letters Patent No. [78,113, dated MayBO, 1876; application filed October 25, 1875.

To all whom it may concern;

Be it known that I, ALEXANDER H. CARYL,

of Forge Village, in the county of Middlesex point and sides of the nail.

The invention consists in the'combination of the turn-table, nail-holding devices, and die with a stationary'plate adapted to support the nail or nails while being moved to the die; also in the combination, with the turntable, of the two-part nippers or holding devices, constructed as hereinafter described, and a cam to operate the nippers to grasp the nails, substantially as described, and in other features hereinafter described and specified.

Figure l is a side elevation of a machine constructed in accordance with my invention. Fig. 2 is a face View of the turntable; and Fig. 3 a top view thereof, both figures being enlarged to more clearly illustrate the parts.

The frame a of the machine, of metal or otherwise, is suitably shaped to support the working parts. The main shaft b, supported in the frame, has power applied to it in any wellknown way, and is provided With a crank, (shown in dotted lines. Fig. 1,) and with an eccentric, c. The crank is connected, by means of a connecting-rod,d, with a toggle or jointed lever, 0, one arm of which is connected with the frame, and the other with a sliding punchcarrying carriage, f, provided with a punch, g, removably held in said carriage, and pro-- vided with an adjusting-screw to cause the punch to project a greater or less distance from the carriage to allow the punch to penetrate the die more or less, or to be adjusted to compensate for wear. This carriage f is reciprocated in a guiding-way, h, and the end of the punch is adapted to enter a die-hole in a die, 2, held in a block or bed, j, the die-opening, and the shape of the punch, corresponding with the shape in which it is desired to leave the nail after it is trimmed.

The turn-table k for carrying and presenting the nails to be trimmedfto the action of the die and punch is arranged to turn on a journal-post or stud, Z, mounted in the plate m, and a sleeve or hub, n, projecting backward from the turn-table, has formed in it ratchet or other teeth 0, to receive a pawl, 19, connected in this instance with a pawl-carrying pinion, q, fitted loosely on post or stud l. A pawl, r, enters the notches 0, or other suit able notches, and prevents the hub n and turn-table from being moved backward. The front face of the turn-table is placed in an inclined position, so that pieces of'metal trimmed from the nails will drop readily to the floor, or into a receptacle provided for their reception, and at the front of the table are secured nippers, composed of two parts, 8 t, one part, 8, being rigidly attached to the turn-table by a screw, 2:, and the other being pivoted thereto by a screw, 42. At their outer ends these nippers are shaped to grasp the head of a horse or cattle shoe-nail, as seen in Fig. 2, and the other end of one member of the nippers is'long enough to bear on a cam, w, on the stationary shaft 1, such cam operating to open and close the nippers, opening them after delivering a nail to receive a new one, and then holding the nippers closed on the nail, as the turn-table rotates, to present the nail to be trimmed. The stationary member s of the nippers projectsforward toward the dies farther than the movable member t, and has a centering projection, 8, adapted to bearagainst the edge of the nail opposite the point at which the pushing-bar meets the nail on the other edge, the projection s and the pushing-bar placing the nail to be trimmed in' correct position over the die.

The turn-table derives its step-by-step rotary motion through the pawl-carrying pinion q and the rack a; on the end of a reciprocating bar, a, connected with an elbow-lever, b pivoted to the frame, and connected with a link, W, in turn connected with the eccentric, and connected with such lever is a link, b connected with a side cam, b having a projection, 0, the reciprocations of the cam c causing the pushing-bar d, pivoted at c, to press with its upper end against one edge of the nail, and hold it in line with the die and punch, and this pushing-bar is moved in the opposite direction by a spring, f. The end of the pushing-bar meets the nail near the lower end of the nippers t.

Projecting from the back of the turn-table are steel blocks or stops g-one to each pair of nippers or nail-holders. A catch, h, pivoted to a projection from the frame, has a spring, 1', to hold the catch in engagement with one of these stops 9, and the catch h 1s moved, to allow the stop gto pass 1t, by means of a pin, 1, 011 the rod a, which strikes the catch it as the rod a and rack a: rise.

The turn-table is moved about in a circular opening in a plate, m, carried at the end of posts it; and this plate serves'as a support for the nails when being moved by the turntable to the die. The nail-heads are placed in and held between the nippers, and by the nippers are placed over the die 71 in holder or block j. The die i has a hole of'the proper shape for the nail, and, as held in Fig. 2, the nail is just over the die, and when the punch 9 comes forward and meets the nail, it punches the same through the die.

In Fig. 2 the nail shown has dotted lines at its point, to illustrate the portion of the nail which it is intended to remove by trimming. Nails held by the nippers are presented automatically and regularly to the action of the die and punch.

In Fig. 4 the connection between the end of the elbow-lever b and rack-bar a is shown in detail as it will be made in practice. The end of the lever is slotted, and receives the rackbar, and adjustable nuts on the rack-bar determine the extremes ot'its motion. The turntable during the downward motion of the rackbar must always be moved far enough to bring the devices for holding the turn-table in engagement, and place the table and nails so that the punch will act correctly, and to insure this I place a rubber or other spring, 0, between the end of the lever 12 and the lower adjusting-nut p. The downward motion of the rack-bar is a little more than enough to move the turn-table the desired distance, and

the spring, when the turn' table comes to its as described. I

3. The turn-table and the stationary and movable nipper members 8 t, the former provided with a centering-projection, s, in com' bination with a cam-projection, to engage the projecting end of the movable member t to cause it to grasp and hold the nail between itself and the stationary member, substan-,

tially as described.

4. The stationary member s of the nippers, provided with the centering-projection 8, in combination with the pushing device, adapted to operate against the nail opposite the'centering-projection, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EXR. H. OARYL.

Witnesses:

G. W. GREGORY, 6. B. KIDDER. 

